Abstract
We prove the local Gaussian dominance condition for a Bose system whose Hamiltonian is diagonal with respect to the particle number operators. The proof is based on obtaining an upper bound estimate for the Bogoliubov inner product of the Bose creation and annihilation operators.
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Corgini, M., Sankovich, D.P. Local Gaussian Dominance: An Anharmonic Excitation of Free Bosons. Theoretical and Mathematical Physics 132, 1019–1028 (2002). https://doi.org/10.1023/A:1019623811451
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DOI: https://doi.org/10.1023/A:1019623811451